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Finding the Fourth Proportional to 3,952.70, 5,454.74 and 2,160.17

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Solution

The fourth proportional to 3,952.70, 5,454.74 and 2,160.17 is: 2,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,952.70 : 5,454.74 = 2,160.17 : x
  2. Step 2: Convert to fraction form
    3,952.70/5,454.74 = 2,160.17/x
  3. Step 3: Cross multiply
    3,952.70x = 5,454.74 × 2,160.17
  4. Step 4: Simplify right side
    3,952.70x = 11,783,164.29
  5. Step 5: Solve for x
    x = 11,783,164.29/3,952.70
  6. Step 6: Final answer
    x = 2,981.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.